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| author | Julian Wiedmann <jwi@linux.ibm.com> | 2019-06-18 20:42:59 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-06-19 16:26:33 -0400 |
| commit | fdbf6326912d578a31ac4ca0933c919eadf1d54c (patch) | |
| tree | 37223616d353d9587a4d56256c43827a2aa5abb0 /net/iucv | |
| parent | 48620e341659f6e4b978ec229f6944dabe6df709 (diff) | |
| download | linux-fdbf6326912d578a31ac4ca0933c919eadf1d54c.tar.gz linux-fdbf6326912d578a31ac4ca0933c919eadf1d54c.tar.bz2 linux-fdbf6326912d578a31ac4ca0933c919eadf1d54c.zip | |
net/af_iucv: remove GFP_DMA restriction for HiperTransport
af_iucv sockets over z/VM IUCV require that their skbs are allocated
in DMA memory. This restriction doesn't apply to connections over
HiperSockets. So only set this limit for z/VM IUCV sockets, thereby
increasing the likelihood that the large (and linear!) allocations for
HiperTransport messages succeed.
Fixes: 3881ac441f64 ("af_iucv: add HiperSockets transport")
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Ursula Braun <ubraun@linux.ibm.com>
Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/iucv')
| -rw-r--r-- | net/iucv/af_iucv.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c index 36eb8d1d9128..2ee68d2d4693 100644 --- a/net/iucv/af_iucv.c +++ b/net/iucv/af_iucv.c @@ -588,7 +588,6 @@ static struct sock *iucv_sock_alloc(struct socket *sock, int proto, gfp_t prio, sk->sk_destruct = iucv_sock_destruct; sk->sk_sndtimeo = IUCV_CONN_TIMEOUT; - sk->sk_allocation = GFP_DMA; sock_reset_flag(sk, SOCK_ZAPPED); @@ -782,6 +781,7 @@ vm_bind: memcpy(iucv->src_user_id, iucv_userid, 8); sk->sk_state = IUCV_BOUND; iucv->transport = AF_IUCV_TRANS_IUCV; + sk->sk_allocation |= GFP_DMA; if (!iucv->msglimit) iucv->msglimit = IUCV_QUEUELEN_DEFAULT; goto done_unlock; @@ -806,6 +806,8 @@ static int iucv_sock_autobind(struct sock *sk) return -EPROTO; memcpy(iucv->src_user_id, iucv_userid, 8); + iucv->transport = AF_IUCV_TRANS_IUCV; + sk->sk_allocation |= GFP_DMA; write_lock_bh(&iucv_sk_list.lock); __iucv_auto_name(iucv); @@ -1781,6 +1783,8 @@ static int iucv_callback_connreq(struct iucv_path *path, niucv = iucv_sk(nsk); iucv_sock_init(nsk, sk); + niucv->transport = AF_IUCV_TRANS_IUCV; + nsk->sk_allocation |= GFP_DMA; /* Set the new iucv_sock */ memcpy(niucv->dst_name, ipuser + 8, 8); |